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Guardrails

Reviewed 19 July 2026Canonical definitionPart of: Runtime Control & Guardrail Terms →

Guardrails are runtime constraints that limit what an AI agent can do, what data it can access, and how it can respond. They are designed to remain enforceable even if the agent reasons toward an unsafe action.

Looking for the applied side? Read Building agent hallucination guardrails.

§01 / QUESTIONSterm: Guardrails
Questions

Common questions.

What are Guardrails?

Guardrails are runtime constraints that limit what an AI agent can do, what data it can access, and how it can respond.

How do Guardrails work?

They are designed to remain enforceable even if the agent reasons toward an unsafe action.

Which terms are related to Guardrails?

Closely related concepts include Jailbreak (AI Agent), Agent Context Isolation, Agent Behavior Policy, Agent Sandboxing. Each is defined in the Prefactor glossary.

Where can I read more about Guardrails in practice?

The guide "Building agent hallucination guardrails" covers the applied side in depth.

§02 / RELATEDnext: where this fits
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Where this fits.

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